1. Plant-herbivore systems;Caughley,1976
2. Mathematical Bioeconomics: The Optimal Management of Renewable Resources;Clark,1976
3. Introduction to the Theory and Application of Differential Equations with Deviating Arguments;El'sgol'ts,1973
4. Stochastic Differential Equations;Gihman,1972
5. Stochastic Models in Biology;Goel,1974